Terminal, wireless communication method and base station

Abstract

A terminal according to one embodiment of the present disclosure includes: a control unit for controlling the reception of both a repeated downlink shared channel (physical downlink shared channel (PDSCH)) and a downlink control channel (physical downlink control channel (PDCCH)) when a specific condition is satisfied; and a receiving unit for preferentially receiving the PDCCH when the specific condition is not satisfied. According to one embodiment of the present disclosure, it is possible to appropriately deal with conflicts between multiple channels / signals.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system. Background Art

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate and low latency (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing capacity and sophistication than LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).

[0003] Subsequent systems of LTE (for example, also known as the fifth generation mobile communication system (5G), 5G+(plus), the sixth generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.) are also discussed.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the Rel.15 / 16NR specifications to date, constraints (also referred to as priority rules) are defined to ensure that, in the event of a conflict between multiple channels / signals, the multiple channels / signals correspond to the same Quasi-Co-Location (QCL) type D, or to avoid such a situation.

[0009] In addition, in NR, discussions are underway regarding DL transmission to UE by one or more transmission / reception points (Transmission / Reception Point (TRP)) (Multi-TRP (MTRP)). In addition, discussions are underway regarding UL transmission to one or more TRPs by UE.

[0010] A UE utilizing MTRP-based control should be able to receive multiple beams (multiple QCL type D channels / signals) simultaneously. For such a UE, it is considered possible to relax the constraints (priority rules) on the conflicts of the above-mentioned multiple channels / signals. However, this constraint in the case where the UE can receive multiple beams (multiple QCL type D channels / signals) simultaneously has not been discussed. If this is not discussed, the transmission and reception of the UE will be inappropriately restricted, and there is a concern that throughput will be reduced or communication quality will deteriorate.

[0011] Therefore, one of the objects of the present application is to provide a terminal, a wireless communication method, and a base station that can appropriately cope with the collision of multiple channels / signals.

[0012] Means for solving problems

[0013] A terminal involved in one embodiment of the present invention comprises: a control unit, which performs the following control, namely, receiving both a repeated downlink shared channel (physical downlink shared channel (PDSCH)) and a downlink control channel (physical downlink control channel (PDCCH)) when specific conditions are met; and a receiving unit, which preferentially receives the PDCCH when the specific conditions are not met.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, it is possible to appropriately deal with collisions between multiple channels / signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing an example of a priority rule when the PDCCH and PDSCH collide in the existing Rel. 16 specification.

[0017] Figure 2 This is a diagram showing an example of an environment of MTRP based on mDCI for explaining the operation of Embodiment 1.1.

[0018] Figure 3A as well as Figure 3B This is a diagram showing an example of a priority rule when the PDCCH and the PDSCH according to Embodiment 1.1 collide.

[0019] Figure 4 This is a diagram showing an example of an environment of MTRP based on sDCI for illustrating the operation of Implementation 1.2.

[0020] Figure 5A as well as Figure 5B This is a diagram showing an example of a priority rule when the PDCCH and the PDSCH collide according to Embodiment 1.2.

[0021] Figure 6 This is a diagram showing an example of a priority rule when the A-CSI-RS involved in Implementation 5.2 collides with other DL signals (PDSCH).

[0022] Figure 7 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0023] Figure 8 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0024] Fig. 9 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0025] Fig.10 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment. DETAILED DESCRIPTION

[0026] (TCI, spatial relationship, QCL)

[0027] In NR, research is underway to control the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and encoding) of at least one of a signal and a channel (expressed as signal / channel) in the UE based on the transmission configuration indication state (Transmission Configuration Indication state (TCI state)).

[0028] The TCI state may also represent an element of a signal / channel for a downlink. The TCI state corresponding to a signal / channel for an uplink may also be represented as a spatial relation.

[0029] The TCI state refers to information related to Quasi-Co-Location (QCL) of signals / channels, and may also be referred to as spatial reception parameters, spatial relationship information, etc. The TCI state may be set for each channel or each signal to the UE.

[0030] QCL is an indicator of the statistical properties of a signal / channel. For example, when a certain signal / channel is in a QCL relationship with other signals / channels, it can also mean that it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same between these different multiple signals / channels (at least one of these is in QCL).

[0031] In addition, the spatial reception parameter may also correspond to the reception beam of the UE (eg, reception analog beam), or the beam may be determined based on the spatial QCL. The QCL (or at least one element of the QCL) in the present disclosure may also be renamed as sQCL (spatial QCL).

[0032] QCL may also be specified in multiple types (QCL types). For example, four QCL types AD may be set that can assume the same parameters (or parameter sets) but have different parameters. The parameters (also referred to as QCL parameters) are shown below:

[0033] QCL Type A (QCL-A): Doppler shift, Doppler spread, average delay, and delay spread;

[0034] QCL type B (QCL-B): Doppler shift and Doppler spread;

[0035] QCL type C (QCL-C): Doppler shift and average delay;

[0036] QCL type D (QCL-D): spatial reception parameters.

[0037] The situation in which the UE assumes that a certain Control Resource Set (CORESET), channel or reference signal is in a specific QCL (e.g., QCL type D) relationship with other CORESETs, channels or reference signals can also be called QCL assumption.

[0038] The UE may also determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI status or QCL assumption of the signal / channel.

[0039] The TCI state may be, for example, information related to the QCL of the target channel (in other words, the reference signal (RS) used for the channel) and other signals (for example, other RS). The TCI state may also be set (indicated) by high-layer signaling, physical layer signaling, or a combination thereof.

[0040] In the present disclosure, the high-layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0041] MAC signaling may also utilize, for example, MAC Control Element (MAC-CE), MAC Protocol Data Unit (PDU), etc. Broadcast information may also include, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (OSI), etc.

[0042] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

[0043] In addition, the channel / signal that is applicable to the TCI state can be called a target channel / reference signal (target channel / RS), or simply referred to as a target, etc. The other signals mentioned above can also be called a reference RS, a source RS, or simply referred to as a reference, etc.

[0044] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0045] In addition, the RS in a QCL relationship with the channel may be, for example, a synchronization signal block (SynchronizationSignal Block (SSB)), a channel state information reference signal (CSI-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a tracking CSI-RS (also called Tracking Reference Signal (TRS)), a QCL detection reference signal (also called QRS), a demodulation reference signal (DeModulation Reference Signal (DMRS)), etc., for example.

[0046] The SSB is a signal block including at least one of a primary synchronization signal (PSS: Primary Synchronization Signal), a secondary synchronization signal (SSS: secondary synchronization signal), and a broadcast channel (Physical Broadcast Channel (PBCH)). The SSB may also be referred to as an SS / PBCH block.

[0047] The RS of QCL type X in the TCI state may represent an RS that is in a QCL type X relationship with a certain channel / signal (DMRS), and the RS may also be referred to as a QCL source of QCL type X in the TCI state.

[0048] (Multiple channels / signals conflict)

[0049] In the Rel.15 / 16NR specifications to date, although the UE can only receive, detect or monitor channels / signals of the same QCL type D at the same time, it cannot receive, detect or monitor multiple channels / signals of different QCL types D at the same time. Therefore, the following constraints (which may also be called priority rules, QCL application rules, etc.) are specified in the Rel.15 / 16NR specifications to ensure that multiple channels / signals belong to the same QCL type D in the event that multiple channels / signals conflict (in other words, are transmitted / received at overlapping times), or to avoid such a situation.

[0050] In addition, in the present disclosure, the QCL type D (reference RS) of a certain channel / signal is different from the QCL type D (reference RS) of other channels / signals, which may also mean that the beam used for communication of the certain channel / signal and the beam used for communication of the other channels / signals are different. In the present disclosure, the QCL type D (reference RS) of a certain channel / signal is different from the QCL type D (reference RS) of other channels / signals, which may also be expressed as the QCL type D of the certain channel / signal is different from that of the other channels / signals, their QCL type D characteristics are different, "QCL type D" is different, etc.

[0051] <PDCCH vs.PDCCH>

[0052] When the UE is configured for single cell operation or carrier aggregation operation of the same frequency band, and when monitoring PDCCH candidates in overlapping monitoring opportunities among multiple CORESETs with the same or different QCL type D characteristics in the activated DL BWP of more than one cell, only the PDCCH in a CORESET among the multiple CORESETs and the CORESET with the same QCL type D characteristics as the CORESET is monitored.

[0053] <PDCCH vs.PDSCH>

[0054] When the offset between the reception of DL DCI and the corresponding PDSCH (also referred to as the scheduling offset) is less than a certain threshold (timeDurationForQCL), the UE may also assume that the DMRS port of the PDSCH of a certain serving cell is in QCL with the reference signal of the following QCL parameters, which are used for the PDCCH of the CORESET with the smallest CORESET ID (controlResourceSetId) associated with the search space monitored in the latest time slot of one or more CORESETs within the activated BWP of the serving cell. In this case, the PDSCH may also be represented as following the default TCI state, with reference to / assuming the default QCL.

[0055] When the PDSCH follows the default TCI state, the UE may also expect to receive the PDCCH associated with the CORESET preferentially when the DMRS of the PDSCH is different from the DMRS of the PDCCH that overlaps with the PDSCH by at least one symbol ('QCL-TypeD'). In addition, these operations may also be applied in the case of intra-band carrier aggregation (Carrier Aggreation (CA)) (the case where the PDSCH and the CORESET are on different component carriers).

[0056] Figure 1 This is a diagram showing an example of the priority rules when the PDCCH and PDSCH conflict in the existing Rel.16 specification. The PDSCH in this example follows the default TCI state. The left side of the figure shows the scheduled channel / signal, and the right side shows the channel / signal with the result of considering the priority rules (the same is true in similar figures later).

[0057] In this example, the QCL type D of the PDCCH and PDSCH shown in the figure is different, and a part of the code elements overlap. In this case, the UE can give priority to receiving the PDCCH and not receive the PDSCH (blackened in the figure) that overlaps with the PDCCH (for example, it can also be discarded). The UE can also receive the PDSCH that does not overlap with the PDCCH.

[0058] <CSI-RS vs.PDCCH>

[0059] For the CSI-RS resources associated with the non-zero power (Non ZeroPower (NZP))-CSI-RS resource set in which the high-layer parameter related to repetition ('repetition') is turned on ('on'), the UE does not assume any CSI-RS setting for the codeword set to monitor the CORESET (that is, the CORESET and CSI-RS resources at this time do not overlap in time).

[0060] On the other hand, for NZP-CSI-RS resource sets that are not the case ('repetition' is not 'on'), if the UE is set with CSI-RS resources and a search space set associated with the CORESET in the same OFDM symbol, the UE may also assume that the DMRS of the PDCCH sent in the CSI-RS and all search space sets associated with the CORESET is in QCL with "QCL type D" (when "QCL type D" can be applied). In other words, for CSI-RS for which repetition is not turned on, the UE may also assume the same QCL as the overlapped PDCCH (CORESET). In addition, these operations may also be applied in the case of intra-band CA (when the above-mentioned CSI-RS and the above-mentioned CORESET are in different component carriers).

[0061] In addition, in the present disclosure, OFDM symbol and symbol may be interchangeably referred to.

[0062] <CSI-RS vs.SSB>

[0063] A UE that has CSI-RS resources and SS / PBCH blocks associated with an NZP-CSI-RS resource set for which a high-layer parameter related to repetition ('repetition') is set in the same OFDM symbol may also assume that the CSI-RS is in QCL with the SS / PBCH block in "QCL type D" (if "QCL type D" can be applied). In other words, for a CSI-RS for which a high-layer parameter related to repetition is set, the UE may also assume that the same QCL as the overlapping SS / PBCH block.

[0064] <PDSCH vs.SSB>

[0065] When the UE receives the SS / PBCH block and the DMRS for the PDSCH in the same OFDM symbol, it can also be assumed that the DMRS is in QCL with the SS / PBCH block in "QCL type D" (when "QCL type D" can be applied). In other words, for PDSCH, the UE can also assume the same QCL as the repeated SS / PBCH block.

[0066] <A-CSI-RS vs. Other DL Signals>

[0067] In the Rel.16 NR specification, when the scheduling offset of the aperiodic CSI-RS (A-CSI-RS) is above the threshold determined based on the beam switching timing reported by the UE, the UE is also expected to apply the QCL assumptions in the indicated TCI states for the aperiodic CSI-RS resources in the CSI triggering state indicated by the CSI trigger field in DCI. That is to say, at this time, the UE can also receive the A-CSI-RS based on the TCI state specified by DCI.

[0068] Here, this scheduling offset can also mean the offset between the last symbol of the PDCCH carrying the DCI that triggers the resource set for A-CSI-RS (or the last time slot containing this PDCCH) and the first symbol (or time slot) of the A-CSI-RS resources in this resource set. The unit of this offset can be in symbol units or time slot units. The information of the scheduling offset of A-CSI-RS can also correspond to the RRC parameter "aperiodicTriggeringOffset".

[0069] In addition, the beam switching timing reported by the UE (UE capability related) can also be referred to as the A-CSI-RS beam switching timing, and can also be abbreviated as beam switching timing, beam switch timing (RRC parameter "beamSwitchTiming"), etc.

[0070] The beam switching timing can adopt different values for each subcarrier spacing (e.g., 60 kHz, 120 kHz). The beam switching timing can adopt values such as 14, 28, 48, 224, 336 symbols, etc.

[0071] The threshold determined based on the beam switching timing can be the reported beam switching timing value, a specific beam switching timing value (e.g., 48), or a value to which a specific offset (e.g., an offset taking into account the subcarrier spacing) is added.

[0072] When the scheduling offset of A-CSI-RS is less than the threshold determined based on the beam switching timing reported by the UE, if there is another DL signal with the indicated TCI state in the same codeword as the A-CSI-RS, the UE can also apply the QCL assumption of the other DL signal when receiving the A-CSI-RS. This specification is intended to prevent the situation where it is too late to switch before receiving the A-CSI-RS, because it takes a certain amount of time from demodulating the triggering DCI to switching the UE's receiving beam corresponding to the TCI state indicated by the DCI.

[0073] In addition, the other DL signals here can be at least one of the following: PDSCH with a scheduling offset above a specific threshold (UE capability information "timeDurationForQCL") (that is, the offset from receiving the DCI to starting to receive the PDSCH scheduled by the DCI is above the specific threshold), A-CSI-RS (that is, other A-CSI-RS) with a scheduling offset above a threshold determined based on the beam switching timing reported by the UE, P-CSI-RS, SP-CSI-RS.

[0074] timeDurationForQCL may also be defined by the minimum time (eg, number of OFDM symbols) for a UE to receive a PDCCH and apply the spatial QCL information of the PDCCH (DCI) to PDSCH processing.

[0075] timeDurationForQCL may also be referred to as QCL time duration, "Threshold", "Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI", "Threshold-Sched-Offset", scheduling offset threshold, scheduling offset threshold, etc. timeDurationForQCL may take values ​​such as 7, 14, or 28 symbols, for example.

[0076] In addition, in the present disclosure, when the other DL signal is A-CSI-RS, the value related to the other DL signal corresponds to the beam switching timing, and when the other DL is PDSCH, the threshold value related to the other DL signal corresponds to the value of timeDurationForQCL reported by the UE.

[0077] In addition, the QCL assumption that the above-mentioned other DL signals can be applied to A-CSI-RS can also be limited to the case where the NZP CSI-RS resource set that specifies the A-CSI-RS resource does not have the high-level parameters "trs-Info" and "repetition".

[0078] For an NZP CSI-RS resource set where trs-Info is set to true, the antenna ports of all NZP CSI-RS resources in the resource set may also be the same. For an NZP CSI-RS resource set where Repetition is set to off, the UE may not assume that the NZP CSI-RS resources in the resource set are transmitted through the same downlink spatial domain transmit filter.

[0079] In addition, when the scheduling offset of the A-CSI-RS is less than a threshold determined based on the beam switching timing reported by the UE, and there is no other DL signal mentioned above with an indicated TCI state in the same codeword as the A-CSI-RS, and at least one CORESET is set in the BWP for receiving the A-CSI-RS, the UE may also apply the following QCL assumption for the CORESET when receiving the A-CSI-RS, where the CORESET has the smallest CORESET-ID in the latest time slot in which one or more CORESETs within the active BWP of the serving cell are monitored, and is associated with the monitored search space (the UE applies the QCL assumption used for the CORESET associated with a monitored search space with the lowest controlResourceSetId in the latestslot in which one or more CORESETs within the active BWP of the serving cell are monitored).

[0080] In addition, when the scheduling offset of the A-CSI-RS is less than the beam switching timing reported by the UE, and there is no other DL signal with the indicated TCI state in the same codeword as the A-CSI-RS, and CORESET is not set in the BWP for receiving the A-CSI-RS, and specific high-level parameters are set (for example, RRC parameters for activating the default beam (also referred to as enableDefaultBeamForCCS, etc.)), the UE may also apply the QCL assumption of the TCI state corresponding to the activated minimum TDI state ID that can be applied to the PDSCH of the activated BWP for receiving the A-CSI-RS when receiving the A-CSI-RS.

[0081] (Multiple TRP)

[0082] However, in NR, one or more transmission / reception points (Transmission / Reception Point (TRP)) (Multi-TRP (MTRP)) are being discussed for DL ​​transmission to the UE. In addition, the UE is being discussed for UL transmission to one or more TRPs.

[0083] A UE utilizing MTRP-based control should be able to simultaneously receive multiple beams (multiple QCL type D channels / signals). With respect to such a UE, it is believed that the constraints (priority rules) regarding the conflicts of the above-mentioned multiple channels / signals can be relaxed. However, this constraint in the case where the UE is able to simultaneously receive multiple beams (multiple QCL type D channels / signals) has not been discussed. If this is not discussed, the transmission and reception of the UE will be inappropriately restricted, and there is a concern that throughput will be reduced or communication quality will deteriorate.

[0084] Therefore, the inventors of the present invention have conceived of a control that can appropriately cope with the collision of a plurality of channels / signals.

[0085] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0086] In addition, in the present disclosure, "A / B" may also mean "at least one of A and B".

[0087] In the present disclosure, activation, deactivation, indication (or indication), selection, configuration, update, determination, etc. may also be interchangeably referred to.

[0088] In the present disclosure, RRC, RRC parameter, RRC message, high-layer parameter, information element (IE), and setting may also be replaced with each other. In the present disclosure, MAC CE, update instruction, and activation / deactivation designation may also be replaced with each other. In the present disclosure, support, control, controllable, operation, and operation may also be replaced with each other.

[0089] Furthermore, in the present disclosure, sequences, lists, sets, groups, and the like may also be used interchangeably.

[0090] In the present disclosure, panel, beam, panel group, beam group, uplink (UL) transmitting entity, TRP, spatial relationship information (SRI), spatial relationship, control resource set (COntrol REsource SET (CORESET)), physical downlink shared channel (PDSCH), codeword, base station, specific antenna port (for example, demodulation reference signal (DeModulationReference Signal (DMRS)) port), specific antenna port group (for example, DMRS port group), specific group (for example, code division multiplexing (Code Division Multiplexing (CDM)) group, specific reference signal group, CORESET group), specific resource (for example, specific reference signal resource), specific resource set (for example, specific reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), etc. can also be replaced with each other.

[0091] The plane may also be associated with at least one of: a group index of an SSB / CSI-RS group, a group index of a group-based beam report, and a group index of an SSB / CSI-RS group for a group-based beam report.

[0092] In addition, the face identifier (ID) and the face can also be replaced with each other. In other words, the TRP ID and the TRP, the CORESET group ID and the CORESET group, etc. can also be replaced with each other.

[0093] In the present disclosure, index, ID, indicator, resource ID may also be replaced with each other. In the present disclosure, sequence, list, set, group, group, cluster, subset, etc. may also be replaced with each other.

[0094] In the present disclosure, a UE with multiple TRPs set can also determine at least one of the TRPs corresponding to the DCI, the TRP corresponding to the PDSCH or UL transmission (PUCCH, PUSCH, SRS, etc.) scheduled by the DCI, etc. based on at least one of the following.

[0095] ·The values ​​of specific fields contained in the DCI (e.g., the field specifying the TRP, the antenna port field, the PRI).

[0096] DMRS corresponding to the scheduled PDSCH / PUSCH (for example, the DMRS sequence, resources, CDM group, DMRS port, DMRS port group, antenna port group, etc.).

[0097] · The DMRS corresponding to the PDCCH on which the DCI is transmitted (for example, the sequence, resources, CDM group, DMRS port, DMRS port group, etc. of the DMRS).

[0098] The CORESET that received the DCI (e.g., the CORESET pool ID of the CORESET, the ID of the CORESET, the scrambling ID (which may also be replaced by the sequence ID), resources, etc.).

[0099] RS (RS related groups, etc.) used for TCI status, QCL assumptions, spatial relationship information, etc.

[0100] In the present disclosure, a single PDCCH (DCI) may also be referred to as a PDCCH (DCI) of a first scheduling type (e.g., scheduling type A (or type 1)). In addition, multiple PDCCHs (DCI) may also be referred to as PDCCHs (DCI) of a second scheduling type (e.g., scheduling type B (or type 2)).

[0101] In the present disclosure, with respect to a single DCI, the i-th TRP (TRP#i) may also mean the i-th TCI state, the i-th CDM group, etc. (i is an integer). With respect to multiple DCIs, the i-th TRP (TRP#i) may also mean the CORESET corresponding to the CORESET pool index = i, the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0102] In the present disclosure, it is also conceivable that a single PDCCH is supported when multiple TRPs utilize ideal backhaul. It is also conceivable that multiple PDCCHs are supported when multiple TRPs utilize non-ideal backhaul.

[0103] In addition, ideal fallback may also be referred to as DMRS port group type 1, reference signal association group type 1, antenna port group type 1, CORESET pool type 1, etc. Non-ideal fallback may also be referred to as DMRS port group type 2, reference signal association group type 2, antenna port group type 2, CORESET pool type 2, etc. The names are not limited thereto.

[0104] In the present disclosure, multiple TRPs, multiple TRP systems, multiple TRP transmissions, and multiple PDSCHs can also be replaced with each other.

[0105] In the present disclosure, a single DCI (sDCI), a single PDCCH, a multi-TRP system based on a single DCI, an MTRP based on sDCI, and activation of 2 TCI states on at least one TCI code point can also be replaced with each other.

[0106] In the present disclosure, multi-DCI (mDCI), multi-PDCCH, multi-TRP system based on multi-DCI, MTRP based on mDCI, 2 CORESET pool indexes or CORESET pool index = 1 (or a value greater than 1) are set, and these can also be replaced with each other.

[0107] The QCL of the present disclosure can also be interchanged with QCL type D.

[0108] In addition, the following embodiments are described based on the assumption that the UE is applied when supporting simultaneous reception of two or more channels / signals of different QCL types D, but can also be applied to other cases where this is not the case.

[0109] (Wireless Communication Method)

[0110] <First Embodiment>

[0111] The first embodiment relates to the collision between the PDCCH and the PDSCH. The PDCCH and the PDSCH in the description of the first embodiment may mean the PDCCH and the PDSCH that overlap each other in time.

[0112] The case of MTRP based on mDCI (implementation 1.1) and the case of MTRP based on sDCI (implementation 1.2) are described separately.

[0113] [Implementation method 1.1]

[0114] Regarding mDCI-based MTRP, when the CORESET pool index is set for CORESET, Figure 1 The priority rules shown may also be applied only if PDCCH and PDSCH are related to the same CORESET pool index.

[0115] When PDCCH and PDSCH are related to different CORESET pool indices, no priority rules are required, and a UE capable of simultaneously receiving two different QCL type D channels / signals can also receive both PDCCH and PDSCH related to these different QCL type D channels / signals.

[0116] In addition, the UE may also determine the association between the CORESET pool index and the PDSCH based on the relationship between the CORESET pool index and the PDCCH that schedules the PDSCH, and may also determine the association between the CORESET pool index and the PDSCH based on the relationship between the CORESET pool index and the PDCCH that is used as a reference target for the QCL (for example, as a reference to the default QCL).

[0117] For example, the UE may determine the CORESET pool index related to the PDSCH as the CORESET pool index related to the PDCCH that schedules the PDSCH, or may determine the CORESET pool index related to the PDSCCH that is referenced as the default QCL for the PDSCH.

[0118] Figure 2 This is a diagram showing an example of an environment of mDCI-based MTRP for illustrating the operation of Implementation 1.1. In this example, the UE uses mDCI-based MTRP using TRP1 and TRP2. TRP1 corresponds to CORESET pool index = 0, and TRP2 corresponds to CORESET pool index = 1. TRP1 sends PDCCH1 and PDSCH1 to the UE. TRP2 sends PDCCH2 and PDSCH2 to the UE.

[0119] In addition, PDCCH1 is not limited to the PDCCH (DCI) for scheduling PDSCH1, and may also represent any PDCCH transmitted from TRP1. In addition, PDCCH2 is not limited to the PDCCH (DCI) for scheduling PDSCH2, and may also represent any PDCCH transmitted from TRP2.

[0120] Figure 3A and 3B FIG. 1 is a diagram showing an example of a priority rule when the PDCCH and PDSCH involved in Implementation 1.1 collide. Figure 2As shown, PDCCH1 and PDSCH1 correspond to TRP1 (CORESET pool index = 0), and PDCCH2 and PDSCH2 correspond to TRP2 (CORESET pool index = 1). In addition, PDSCH1 or PDSCH2 in this example follows the default TCI state.

[0121] exist Figure 3A In the figure, regarding PDCCH1 and PDSCH1 corresponding to the same CORESET pool index, the QCL type D is different and a portion of the codewords overlap. In this case, the UE can preferentially receive PDCCH1 instead of receiving PDSCH1 that overlaps with PDCCH1 (blackened in the figure). The UE can also receive the portion of PDSCH1 that does not overlap with PDCCH1.

[0122] Figure 3B In the example, for PDCCH1 and PDSCH2 corresponding to different CORESET pool indexes, the QCL type D is different and some symbols overlap. At this time, the UE can also receive PDSCH2 and PDCCH1 that overlap with PDCCH1 at the same time.

[0123] [Implementation method 1.2]

[0124] Regarding sDCI-based MTRP, when multiple (e.g., 2) TCI states are applied for PDSCH (e.g., indicated by DCI or represented by a default QCL), and when the channel / signal of QCL type D of the DMRS of the PDCCH is the same as a channel / signal of QCL type D of the above-mentioned multiple TCI states of the DMRS of the PDSCH, no priority rule is required, and a UE with the simultaneous reception capability of two different QCL type D channels / signals can also receive both the PDCCH and the PDSCH related to these different QCL type D channels / signals.

[0125] When multiple TCI states are applied for PDSCH, and the channel / signal of QCL type D of DMRS of PDCCH is different from the channel / signal of any QCL type D of the above multiple TCI states of DMRS for PDSCH, the UE may also follow at least one of the following:

[0126] (1) PDCCH is received first, and PDSCH on the symbol overlapping with the PDCCH is not received;

[0127] (2) Prioritize receiving the PDCCH and the PDSCH associated with one of the plurality of TCI states, and do not receive the PDSCH associated with the remaining TCI states on the symbol overlapping with the PDCCH.

[0128] The TCI state for PDSCH in (2) above that is prioritized may be pre-specified in the specification, may be set / activated to the UE through high-layer signaling (e.g., RRC, MAC CE), or may be determined based on UE capabilities. The TCI state for PDSCH in (2) above that is prioritized may also be a TCI state among the above-mentioned multiple TCI states whose TCI state ID meets a specific value (e.g., a minimum value, a maximum value).

[0129] Figure 4 This is a diagram showing an example of an environment of sDCI-based MTRP for explaining the operation of Embodiment 1.2. In this example, the UE uses sDCI-based MTRP using TRP1 and TRP2. TRP1 transmits PDCCH and PDSCH to the UE. TRP2 transmits PDSCH (scheduled by PDCCH from TRP1) to the UE.

[0130] In addition, PDCCH1 is not limited to the PDCCH (DCI) used to schedule PDSCH1, and may also mean any PDCCH transmitted from TRP1.

[0131] In the case where the TCI code point of the DCI transmitted via the PDCCH represents a group of more than two TCI states, the UE receives PDSCHs corresponding to different TCI states (e.g., sent from different TRPs) as shown in the figure. In this example, it is assumed that the PDSCH from TRP1 corresponds to TCI state 1, and the PDSCH from TRP2 corresponds to TCI state 2.

[0132] Figure 5A 5B is a diagram showing an example of a priority rule when the PDCCH and PDSCH involved in Implementation 1.2 collide. Figure 4 As shown, the PDCCH and the PDSCH corresponding to TCI state 1 correspond to TRP1, and the PDSCH corresponding to TCI state 2 corresponds to TRP2. It is assumed that the QCL type D of the PDCCH is different from the QCL type D of any PDSCH (QCL type D of TCI state 1 and 2). In addition, the PDSCH in this example may follow the default TCI state or not.

[0133] exist Figure 5AIn the figure, the PDCCH has different QCL types D for the PDSCH corresponding to TCI state 1 and the PDSCH2 corresponding to TCI state 2, and some symbols overlap. In this case, the UE may also give priority to receiving the PDCCH and not receive the PDSCHs that overlap with the PDCCH (blackened in the figure). The UE may also receive the PDSCHs that do not overlap with the PDCCH.

[0134] exist Figure 5B In the example, the PDCCH has different QCL types D for the PDSCH corresponding to TCI state 1 and the PDSCH2 corresponding to TCI state 2, and a portion of the codewords overlap. In this example, it is assumed that the TCI state of the PDSCH that is prioritized is the TCI state whose TCI state ID corresponds to the largest value among the multiple TCI states designated for the PDSCH.

[0135] In this case, the UE may also preferentially receive the PDCCH and the PDSCH corresponding to TCI state 2, and not receive the PDSCH corresponding to TCI state 1 overlapping with the PDCCH (blackened in the figure). The UE may also receive each PDSCH that does not overlap with the PDCCH.

[0136] According to the first embodiment described above, it is possible to appropriately cope with the collision between the PDCCH and the PDSCH.

[0137] <Second Embodiment>

[0138] The second embodiment relates to the conflict between CSI-RS and PDCCH (CORESET). The CSI-RS and PDCCH in the description of the second embodiment may also refer to CSI-RS and PDCCH that overlap each other in time. The PDCCH of the present disclosure may also be replaced with CORESET.

[0139] The case of MTRP based on mDCI (implementation 2.1) and the case of MTRP based on sDCI (implementation 2.2) are described separately.

[0140] [Implementation method 2.1]

[0141] Regarding mDCI-based MTRP, when the CORESET pool index is set for CORESET, it can also support directly (explicitly) or indirectly (implicitly) setting the relationship between the CSI-RS resource or NZP-CIS-RS resource set and the CORESET pool index.

[0142] For the CSI-RS resources associated with the NZP-CSI-RS resource set for which the high-layer parameter related to repetition ('repetition') is turned on ('on'), the UE may not assume that the CSI-RS is set to be related to the same CORESET pool index for the codewords set to monitor the CORESET related to a certain CORESET pool index. The CSI-RS resources may also be configured in codewords overlapping with CORESETs related to different CORESET pool indices.

[0143] For a CSI-RS associated with an NZP-CSI-RS resource set for which a higher layer parameter related to repetition ('repetition') is turned on ('on'), the CSI-RS and PDCCH associated with different CORESET pool indexes may also be received simultaneously.

[0144] On the other hand, for NZP-CSI-RS resource sets that are not turned on ('repetition'), when the CSI-RS and the CORESET are associated with the same CORESET pool index, the UE may also assume that the CSI-RS and the DMRS of the PDCCH sent in all search space sets associated with the CORESET are in QCL in a "QCL type D" manner. When the CSI-RS and the CORESET are associated with different CORESET pool indexes, the CSI-RS and the DMRS of the PDCCH used for the CORESET may also be allowed to correspond to different "QCL types D".

[0145] [Implementation method 2.2]

[0146] Regarding MTRP based on sDCI, similar to the case of single TRP, the existing priority rules of Rel.16 mentioned above can also be applied.

[0147] In addition, when the UE supports simultaneous reception of a total of X QCLs (channels / signals), and the total number of different QCLs for CSI-RS and PDCCH in the same OFDM symbol is less than X, the UE may receive all of the CSI-RS and the PDCCH; otherwise, the UE may not receive all of the CSI-RS and the PDCCH. When not receiving all, the UE may discard (or not receive) at least one of a part of the CSI-RS and a part of the PDCCH so that the transmission of different QCLs becomes less than X.

[0148] A UE supporting simultaneous reception of a total of X QCLs (channels / signals) may also expect that the total number of different QCLs used for CSI-RS and PDCCH in the same OFDM symbol does not exceed X.

[0149] When the CSI-RS and PDCCH of different QCLs in the same OFDM symbol belong to the same group regarding the first group-based beam report, the UE may also receive all of the CSI-RS and the PDCCH. Here, the first group-based beam report may also be defined by the situation that the beams of the same group can be received by the UE at the same time. The first group-based beam report may also be a group-based beam report for Rel.16 / 17.

[0150] For CSI-RS and PDCCH belonging to different groups regarding the first group-based beam report, the UE may also apply the existing priority rules of Rel.16 mentioned above.

[0151] When the CSI-RS and PDCCH of different QCLs in the same OFDM symbol belong to different groups regarding the second group-based beam report, the UE may also receive all of the CSI-RS and the PDCCH. Here, the second group-based beam report may also be defined by the situation that beams of different groups can be received by the UE at the same time. The second group-based beam report may also be a group-based beam report for Rel.17.

[0152] For the CSI-RS and PDCCH belonging to the same group reported on the second group-based beam, the UE may also apply the existing priority rule of Rel. 16 mentioned above.

[0153] According to the second embodiment described above, it is possible to appropriately cope with the collision between the CSI-RS and the PDCCH.

[0154] <Third Embodiment>

[0155] The third embodiment relates to the collision between CSI-RS and SSB. The CSI-RS and SSB in the description of the third embodiment may also mean CSI-RS and SSB that overlap each other in time.

[0156] The case of MTRP based on mDCI (implementation 3.1) and the case of MTRP based on sDCI (implementation 3.2) are described separately.

[0157] [Implementation method 3.1]

[0158] Regarding MTRP based on mDCI, when the CORESET pool index is set for CORESET, it can also support directly (explicitly) or indirectly (implicitly) setting the relationship between the CSI-RS resources or NZP-CIS-RS resource set and the CORESET pool index, and it can also support directly (explicitly) or indirectly (implicitly) setting the relationship between the SSB and the CORESET pool index.

[0159] When the CSI-RS resource is set in the same OFDM codeword as the SSB, and the CSI-RS and the SSB are related to the same CORESET pool index, the UE can also assume that the CSI-RS and the SSB are in QCL in a "QCL type D" manner.

[0160] In addition, when the CSI-RS resource is set in the same OFDM codeword as the SSB, and the CSI-RS and the SSB are associated with different CORESET pool indexes, the UE can also assume that there are constraints on the CSI-RS and the SSB regarding QCL type D (for example, the CSI-RS and the SSB can also be allowed to belong to different "QCL types D").

[0161] In addition, the indirect setting of the relationship between a certain channel / signal and a CORESET pool index in the present disclosure also means, for example, deriving a correlation based on a QCL assumption or a TCI state. For example, when CORESET#2 corresponding to CORESET pool index #1 is set for TCI state #3, SSB#4 is a source reference signal (reference RS) of TCI state #3, implicitly indicating that SSB#4 is related to CORESET pool index #1.

[0162] [Implementation method 3.2]

[0163] Regarding MTRP based on sDCI, similar to the case of single TRP, the existing priority rules of Rel.16 mentioned above can also be applied.

[0164] In addition, regarding the MTRP based on sDCI, the content of replacing "PDCCH" with "SSB" in Implementation 2.2 may also be utilized. For example, when the UE supports simultaneous reception of a total of X QCLs (channels / signals), and the total number of different QCLs for CSI-RS and SSB in the same OFDM symbol is less than X, the UE may also receive all of the CSI-RS and the SSB; otherwise, the UE may not receive all of the CSI-RS and the SSB.

[0165] According to the third embodiment described above, it is possible to appropriately deal with the collision between CSI-RS and SSB.

[0166] <Fourth Embodiment>

[0167] The fourth embodiment relates to the conflict between PDSCH and SSB. The PDSCH and SSB in the description of the fourth embodiment may also mean PDSCH and SSB overlapping each other in time. In the fourth embodiment, PDSCH and DMRS used for PDSCH may also be replaced with each other.

[0168] The case of MTRP based on mDCI (implementation 4.1) and the case of MTRP based on sDCI (implementation 4.2) are described separately.

[0169] [Implementation method 4.1]

[0170] Regarding mDCI-based MTRP, when the CORESET pool index is set for CORESET, it can also support directly (explicitly) or indirectly (implicitly) setting the relationship between SSB and the CORESET pool index.

[0171] In the case of receiving DMRS for PDSCH in the same OFDM symbol as SSB, and in the case that the PDSCH and the SSB are related to the same CORESET pool index, the UE may also assume that the PDSCH and the SSB are in QCL in "QCL Type D" manner.

[0172] In addition, in the case of receiving the DMRS for PDSCH in the same OFDM symbol as the SSB, and in the case where the PDSCH and the SSB are associated with different CORESET pool indexes, the UE can also receive both the PDSCH and the SSB associated with these different QCL type D channels / signals.

[0173] The relationship between the CORESET pool index and the PDSCH may also be determined in the same manner as in Implementation 1.1.

[0174] [Implementation method 4.2]

[0175] Regarding sDCI-based MTRP, when multiple (e.g., 2) TCI states are applied for PDSCH (e.g., indicated by DCI or represented by default QCL), and when the UE receives DMRS and SSB for PDSCH in the same OFDM codeword, it can also be imagined that a channel / signal of QCL type D in the above-mentioned multiple TCI states for the PDSCH is in QCL in a "QCL type D" manner with the SSB.

[0176] In other words, the UE may also give priority to receiving the SSB and the PDSCH associated with one of the multiple TCI states. The UE may also not receive the PDSCH associated with the remaining TCI states in the multiple TCI states in the codeword overlapping with the SSB. The TCI state that is prioritized for the PDSCH may also be the TCI state in the multiple TCI states above whose TCI state ID corresponds to a specific value (e.g., the minimum value, the maximum value).

[0177] According to the fourth embodiment described above, it is possible to appropriately deal with the conflict between the PDSCH and the SSB.

[0178] <Fifth Embodiment>

[0179] The fifth embodiment relates to the collision between A-CSI-RS and other DL signals. The A-CSI-RS and other DL signals in the description of the fifth embodiment may also mean A-CSI-RS and other DL signals that overlap with each other in time.

[0180] The A-CSI-RS in the fifth embodiment corresponds to an A-CSI-RS whose scheduling offset is less than a threshold determined based on the beam switching timing reported by the UE. In addition, the other DL signal in the fifth embodiment corresponds to "the other DL signal" specified in the existing Rel.15 / 16. In addition, the PDSCH in the fifth embodiment represents the PDSCH corresponding to the other DL signal.

[0181] The case of MTRP based on mDCI (implementation 5.1) and the case of MTRP based on sDCI (implementation 5.2) are described separately.

[0182] [Implementation method 5.1]

[0183] Regarding mDCI-based MTRP, when the CORESET pool index is set for CORESET, it can also support directly (explicitly) or indirectly (implicitly) setting the relationship between the A-CSI-RS resource or A-CIS-RS resource set and the CORESET pool index.

[0184] It is also possible that when the A-CSI-RS and other DL signals are related to the same CORESET pool index, the UE gives priority to the QCL used for the other DL signal (for example, applies the QCL used for the other DL signal to the reception of the A-CSI-RS); if this is not the case, the UE receives both the A-CSI-RS and the other DL signal of different QCL type D.

[0185] The relationship between the CORESET pool index and the PDSCH may be determined in the same manner as in Implementation 1.1.

[0186] [Implementation method 5.2]

[0187] Regarding sDCI-based MTRP, when multiple (e.g., 2) TCI states are applied for PDSCH (e.g., indicated by DCI or represented by default QCL), and when the UE receives DMRS and A-CSI-RS for PDSCH in the same OFDM symbol, the UE may also follow at least one of the following:

[0188] When the QCL type D of the A-CSI-RS is the same as one of the above-mentioned multiple TCI states, receiving both the A-CSI-RS and the PDSCH;

[0189] When the QCL type D of the A-CSI-RS is different from any of the above-mentioned multiple TCI states, the QCL assumption of the specific TCI state is applied to the reception of the A-CSI-RS and the PDSCH, and the QCL assumption of the remaining TCI states among the above-mentioned multiple TCI states is applied to the remaining PDSCH reception. The specific TCI state may also be a TCI state among the above-mentioned multiple TCI states whose TCI state ID conforms to a specific value (e.g., a minimum value, a maximum value).

[0190] In addition, regarding MTRP based on sDCI, the content of changing "CSI-RS" to "A-CSI-RS" and changing "PDCCH" to "other DL signals" in Implementation 2.2 may also be utilized. For example, when the UE supports simultaneous reception of a total of X QCLs (channels / signals), and when the total number of different QCLs for A-CSI-RS and other DL signals in the same OFDM symbol is less than X, the UE may also receive all of the A-CSI-RS and the other DL signals; otherwise, the UE may not receive all of the A-CSI-RS and the other DL signals.

[0191] Figure 6This is a diagram showing an example of a priority rule when the A-CSI-RS involved in Implementation 5.2 conflicts with other DL signals (PDSCH). In this example, the A-CSI-RS has different QCL types D for both the PDSCH corresponding to TCI state 1 and the PDSCH2 corresponding to TCI state 2, and some code elements overlap. It is assumed that the QCL type D of the A-CSI-RS is different from the QCL type D of any PDSCH (QCL type D of TCI state 1 and 2). In addition, the PDSCH in this example may follow the default TCI state or not.

[0192] In this example, it is assumed that the above-mentioned specific TCI state (TCI state of the PDSCH that is prioritized) is the TCI state whose TCI state ID corresponds to the smallest value among multiple TCI states specified for the PDSCH overlapping with the A-CSI-RS.

[0193] At this time, the UE uses TCI state 1 for receiving the A-CSI-RS and the PDSCH in the symbol where the A-CSI-RS and the PDSCH overlap, and also uses TCI state 2 for receiving the PDSCH.

[0194] In addition, in this example, TCI state 1 is not applied to the A-CSI-RS that does not overlap with the PDSCH, but it can also be applied.

[0195] According to the fifth embodiment described above, it is possible to appropriately deal with the collision between the A-CSI-RS and other DL signals.

[0196] <Others>

[0197] In the above-mentioned embodiment, the following example is described: when the CORESET pool index is set to the CORESET, the same QCL-D is assumed in the UE for different channels / RS related to the same CORESET pool index, and different QCL-Ds are assumed in the UE for different channels / RS related to different CORESET pool indexes.

[0198] In the above-mentioned embodiment, the following example is described: when multiple TCI states are used for PDSCH, if one of the multiple TCI states corresponds to the same QCL-D as other DL channels / signals, the UE receives both the PDSCH and the other DL channels / signals. If they do not correspond to the same QCL-D, any one of the TCI states is prioritized.

[0199] In addition, at least one of the above embodiments may be applied only to a UE that reports a specific UE capability (UE capability) or supports the specific UE capability.

[0200] The specific UE capability may also represent at least one of the following:

[0201] Whether simultaneous reception is supported;

[0202] Whether it supports simultaneous reception of more than two different QCL Type D channels / signals; and

[0203] • Number of QCLs used for simultaneous reception in 1 OFDM symbol.

[0204] As for whether the capability of supporting simultaneous reception is concerned, it can be defined separately for each of the above-mentioned embodiments, or it can be defined commonly for several embodiments. For example, it can also be defined to indicate the capability of supporting simultaneous reception of any two of PDCCH, PDSCH, CSI-RS, SSB, and A-CSI-RS (also between the same channel / signal). In addition, for example, the capability of supporting simultaneous reception related to PDSCH can also indicate support for the processing related to simultaneous reception described in the first embodiment (conflict between PDCCH and PDSCH) and the fourth embodiment (conflict between PDSCH and SSB).

[0205] The capability of the number of QCLs for simultaneous reception in one OFDM symbol may be defined per Bandwidth Part (BWP) / per CC (component carrier) / per band, may be defined across all CCs, or may be defined across all bands. When defined across all CCs / all bands, the above-mentioned "1 OFDM symbol" is defined for the purpose of a specific subcarrier spacing (SCS). The specific SCS may be, for example, a smaller (or larger) SCS among the SCSs that can be used (or set) in all CCs / all bands, such as 15kHz.

[0206] In addition, the "CSI-RS", "A-CSI-RS", "SSB", etc. disclosed in the present invention can also be replaced by a radio link monitoring reference signal (Radio Link Monitoring RS (RLM-RS)), a beam failure detection RS (Beam Failure Detection RS (BFD-RS)), an RS for beam management, etc.

[0207] In addition, at least one of the above-mentioned embodiments may also be applied when specific information associated with the above-mentioned embodiments is set to the UE through high-layer signaling (if not set, for example, the operation of Rel.15 / 16 is applied). For example, the specific information may also be information indicating a case where different spatial relationships for PUSCH repetition are enabled, any RRC parameter for a specific version (for example, Rel.17), etc.

[0208] In addition, the above-mentioned embodiments may be applied when multiple TRPs or multiple planes (operations) are set for the UE, or may be applied when this is not the case.

[0209] (Wireless Communication System)

[0210] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0211] Figure 7 1 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0212] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple Radio Access Technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRAN-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0213] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0214] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NR-NR Dual Connectivity) (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0215] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a wide coverage, and a base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The arrangement and number of each cell and the user terminal 20 are not limited to the illustrated method. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0216] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0217] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band below 6 GHz (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited thereto. For example, FR1 may correspond to a frequency band higher than FR2.

[0218] Furthermore, the user terminal 20 may communicate in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0219] Multiple base stations 10 can be connected by wired (e.g., optical fiber, X2 interface, etc. in accordance with Common Public Radio Interface (CPRI)) or wireless (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 equivalent to a high-level station can be called an Integrated Access Backhaul (IAB) host, and the base station 12 equivalent to a relay station (relay) can also be called an IAB node.

[0220] The base station 10 may also be connected to the core network 30 via other base stations 10, or directly connected to the core network 30. The core network 30 may also include, for example, at least one of an evolved packet core (EPC), a 5G core network (5G Core Network (5GCN)), a next generation core (NGC), and the like.

[0221] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0222] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UP), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0223] The radio access scheme may also be referred to as a waveform. In the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0224] In the wireless communication system 1, as a downlink channel, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. shared by each user terminal 20 can also be used.

[0225] In addition, in the wireless communication system 1, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like may be used.

[0226] The PDSCH transmits user data, high-layer control information, system information block (SIB), etc. The PUSCH transmits user data, high-layer control information, etc. In addition, the PBCH transmits the master information block (MIB).

[0227] The PDCCH may also transmit lower layer control information. The lower layer control information may include, for example, downlink control information (DCI: Downlink Control Information) including scheduling information of at least one of the PDSCH and the PUSCH.

[0228] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0229] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0230] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0231] Through PUCCH, uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also called hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) can also be transmitted. Through PRACH, random access preamble codes used to establish a connection with a cell can also be transmitted.

[0232] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link". In addition, various channels may be expressed without adding "Physical" to the beginning.

[0233] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may also be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may also be transmitted.

[0234] The synchronization signal may also be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0235] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal (UE-specific Reference Signal)).

[0236] (Base Station)

[0237] Figure 81 is a diagram showing an example of a structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission line interface 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission line interface 140 may each include more than one.

[0238] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also conceivable that the base station 10 also has other functional blocks necessary for wireless communication. Part of the processing of each unit described below may also be omitted.

[0239] The control unit 110 controls the entire base station 10. The control unit 110 can be configured by a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0240] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission, reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0241] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are explained based on the common knowledge in the technical field involved in the present disclosure.

[0242] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmitting unit may also be configured by a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured by a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0243] The transmitting / receiving antenna 130 can be constituted by an antenna such as an array antenna, which is described based on the common knowledge in the technical field to which the present disclosure relates.

[0244] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0245] The transmitting and receiving unit 120 may also form at least one of a transmitting beam and a receiving beam by using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), and the like.

[0246] The sending and receiving unit 120 (sending processing unit 1211) may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110, and generate a bit string to be sent.

[0247] The transmitting and receiving unit 120 (transmitting processing unit 1211) may also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0248] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0249] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0250] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal, and obtain user data, etc.

[0251] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may perform radio resource management (Radio Resource Management (RRM)) measurement, channel state information (CSI) measurement, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (ReceivedSignal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement result may also be output to the control unit 110.

[0252] The transmission path interface 140 may also send and receive signals (backhaul signaling) between devices included in the core network 30 , other base stations 10 , etc., and acquire and transmit user data (user plane data) and control plane data for the user terminal 20 .

[0253] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0254] Furthermore, the transmitting / receiving unit 120 may transmit at least one of a downlink shared channel (physical downlink shared channel (PDSCH)) and a downlink control channel (physical downlink control channel (PDCCH)) repeatedly to the user terminal 20 .

[0255] It is also conceivable that the control unit 110 controls the user terminal 20 to receive both the PDSCH and the PDCCH when a specific condition is satisfied.

[0256] Furthermore, the transmitting / receiving unit 120 may transmit a downlink control channel (physical downlink control channel (PDCCH)) to the user terminal 20 in a control resource set (Control Resource Set (CORESET)).

[0257] The control unit 110 may also be controlled as follows: that is, the user terminal 20 does not assume that, for the codeword set to monitor the CORESET, the high-layer parameters related to repetition are set to be turned on, and the CSI-RS resources are associated with the CORESET pool index that is the same as the CORESET pool index of the CORESET.

[0258] In addition, the transmitting and receiving unit 120 may also send an aperiodic channel state information reference signal (Aperiodic Channel State Information-Reference Signal (A-CSI-RS)) to the user terminal 20 .

[0259] The control unit 110 can also be imagined as follows: in the user terminal 20, when the scheduling offset between the reception of the downlink control channel for transmitting downlink control information for scheduling the A-CSI-RS and the reception of the A-CSI-RS is less than a threshold determined based on the value of the period for beam switching reported by the user terminal 20, and when there are other downlink signals in the same codeword as the A-CSI-RS and the A-CSI-RS and the other downlink signals are related to the same control resource set (Control Resource Set (CORESET)) pool index, the user terminal 20 gives priority to Quasi-Co-Location (QCL) used for other downlink signals.

[0260] (User Terminal)

[0261] Fig. 9 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each include more than one.

[0262] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0263] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0264] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission, reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 220.

[0265] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are explained based on the common knowledge in the technical field involved in the present disclosure.

[0266] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmitting unit may also be configured by a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured by a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0267] The transmitting / receiving antenna 230 can be constituted by an antenna such as an array antenna, which is described based on the common knowledge in the technical field to which the present disclosure relates.

[0268] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0269] The transmitting and receiving unit 220 may also form at least one of a transmitting beam and a receiving beam by using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), and the like.

[0270] The sending and receiving unit 220 (sending processing unit 2211) may also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210, and generate a bit string to be sent.

[0271] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0272] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transmitting and receiving unit 220 (transmitting processing unit 2211) may perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, DFT processing may not be performed as the above-mentioned transmission processing.

[0273] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0274] On the other hand, the transmitting and receiving unit 220 (RF unit 222) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230.

[0275] The sending and receiving unit 220 (receiving processing unit 2212) can also perform receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing on the obtained baseband signal, and obtain user data, etc.

[0276] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurement, CSI measurement, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement result may also be output to the control unit 210.

[0277] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0278] In addition, the control unit 210 may perform control to receive both the repeated downlink shared channel (physical downlink shared channel (PDSCH)) and the downlink control channel (physical downlink control channel (PDCCH)) when a specific condition is satisfied.

[0279] The transmitting and receiving unit 220 may also preferentially receive the PDCCH when the specific condition is not met.

[0280] Here, the specific condition may be the following condition: that is, the quasi-co-location (QCL) type D of the demodulation reference signal (DeModulation Reference Signal (DMRS)) of the PDSCH is different from the QCL type D of the DMRS of the PDCCH, and the PDSCH and the PDCCH are related to different control resource set (Control Resource Set (CORESET)) pool indexes.

[0281] The specific condition may also be the following condition: that is, multiple transmission configuration indication states (Transmission Configuration Indication state (TCI state)) are applied for the PDSCH, and the quasi-co-location (QCL) type D of the demodulation reference signal (DeModulation Reference Signal (DMRS)) of the PDCCH is the same as a QCL type D of the multiple TCI states.

[0282] When the specific condition is not met, the transmitting and receiving unit 220 may also preferentially receive the PDSCH and the PDSCH associated with one of the multiple TCI states.

[0283] The transmitting / receiving unit 220 may monitor a downlink control channel (physical downlink control channel (PDCCH)) in a control resource set (Control Resource Set (CORESET)).

[0284] The control unit 210 may also not assume the following situation: for the codeword set to monitor the CORESET, the high-level parameters related to repetition are set to be associated with the activated non-zero power channel state information reference signal (Non Zero Power Channel State Information Reference Signal (NZP-CSI-RS)) resource set and are related to the CSI-RS resource with the same CORESET pool index as the CORESET pool index of the CORESET.

[0285] The control unit 210 can also be imagined as, for a CSI-RS resource associated with an NZP-CSI-RS resource set whose high-layer parameter related to repetition is off and related to a CORESET pool index that is the same as the CORESET pool index of the CORESET, the CSI-RS resource and the demodulation reference signal (DeModulation Reference Signal (DMRS)) of the PDCCH sent in all search space sets associated with the CORESET are in QCL in a quasi-co-location (QCL) mode D.

[0286] The control unit 210 may also receive all of the CSI-RS and the PDCCH when the PDCCH and CSI-RS in the same symbol correspond to different quasi-co-locations (QCL) and belong to the same group related to the first group-based beam report.

[0287] The control unit 210 may also receive all of the CSI-RS and the PDCCH when the PDCCH and CSI-RS in the same symbol correspond to different quasi-co-locations (QCL) and belong to different groups related to the second group-based beam report.

[0288] In addition, the control unit 210 may also give priority to Quasi-Co-Location (QCL) for other downlink signals when the scheduling offset between the reception of a downlink control channel for transmitting downlink control information for scheduling an aperiodic Channel State Information-Reference Signal (A-CSI-RS) and the reception of the A-CSI-RS is less than a threshold determined based on the value of the reported period for beam switching, and when there are other downlink signals in the same codeword as the A-CSI-RS and the A-CSI-RS and the other downlink signals are related to the same control resource set (Control Resource Set (CORESET)) pool index.

[0289] The transmitting and receiving unit 220 may also receive the A-CSI-RS.

[0290] (Hardware Structure)

[0291] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented using one device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, using wired, wireless, etc.) connected and implemented using these multiple devices. The functional block can also be implemented by combining software with the above-mentioned one device or the above-mentioned multiple devices.

[0292] Here, the functions include: judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, considering, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that plays a role in sending can also be called a transmitting unit, a transmitter, etc. No matter which one it is, as mentioned above, its implementation method is not particularly limited.

[0293] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.10 The base station 10 and the user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007.

[0294] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or may exclude some of the devices.

[0295] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or the processing may be performed by two or more processors simultaneously, sequentially, or using other methods. In addition, the processor 1001 may also be implemented by one or more chips.

[0296] The various functions in the base station 10 and the user terminal 20 are implemented, for example, in the following manner: by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0297] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0298] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 110 (210) can be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and other functional blocks can also be implemented in the same way.

[0299] The memory 1002 is a computer-readable recording medium, and may be composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically EPROM (EEPROM), a random access memory (RAM), or other suitable storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store an executable program (program code), a software module, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0300] The storage 1003 is a computer-readable recording medium, and may be composed of, for example, a flexible disk, a floppy (registered trademark) disk, an optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0301] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., for example, in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 120 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be physically or logically separated by the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0302] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0303] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for information communication. The bus 1007 may be configured using a single bus or different buses between the devices.

[0304] In addition, the base station 10 and the user terminal 20 may include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and may also use the hardware to implement a part or all of each functional block. For example, the processor 1001 may be implemented using at least one of these hardware.

[0305] (Variation Example)

[0306] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure can be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signal or signaling) can also be replaced with each other. In addition, a signal can also be a message. A reference signal can also be referred to as RS, and depending on the applied standard, it can also be referred to as a pilot, a pilot signal, etc. In addition, a component carrier (CC) can also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0307] A wireless frame may also be composed of one or more periods (frames) in the time domain. The one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may be a fixed duration (e.g., 1 ms) that is independent of a parameter set (numerology).

[0308] Here, the parameter set may also be a communication parameter applied to at least one of the transmission and reception of a certain signal or channel. The parameter set may also represent, for example, at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filtering process performed by a transmitter and receiver in the frequency domain, a specific windowing process performed by a transmitter and receiver in the time domain, and the like.

[0309] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0310] A time slot may also include multiple mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of a smaller number of symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0311] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by other names corresponding to each other. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0312] For example, one subframe may be referred to as a TTI, multiple consecutive subframes may be referred to as a TTI, and one time slot or one mini-time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini-time slot, etc. instead of a subframe.

[0313] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in units of TTI. In addition, the definition of TTI is not limited to this.

[0314] TTI can be a transmission time unit for data packets (transmission blocks), code blocks, code words, etc. after channel coding, and can also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which the transmission block, code block, code word, etc. is actually mapped can be shorter than the TTI.

[0315] In addition, when 1 time slot or 1 mini time slot is called TTI, more than 1 TTI (i.e., more than 1 time slot or more than 1 mini time slot) can be the minimum time unit of scheduling. In addition, the number of time slots (number of mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0316] A TTI with a duration of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-time slot, a sub-time slot, a time slot, etc.

[0317] In addition, long TTI (e.g., normal TTI, subframe, etc.) can also be replaced by a TTI with a duration exceeding 1 ms, and short TTI (e.g., shortened TTI, etc.) can also be replaced by a TTI with a TTI length shorter than that of long TTI and longer than 1 ms.

[0318] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain. In the frequency domain, it may also include one or more consecutive subcarriers (subcarriers). The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0319] In addition, an RB may include one or more symbols in the time domain, and may be the length of one slot, one mini slot, one subframe, or one TTI. One TTI, one subframe, etc. may also be composed of one or more resource blocks, respectively.

[0320] In addition, one or more RBs may also be referred to as a physical resource block (physical RB (PRB)), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0321] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0322] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB based on a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0323] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0324] At least one of the configured BWPs may be activated, and the UE may not assume that a specific channel / signal is transmitted or received outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may be replaced by "BWP".

[0325] In addition, the structures of the radio frame, subframe, time slot, mini-time slot and symbol mentioned above are only examples. For example, the number of subframes included in the radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in the time slot, the number of symbols and RBs included in the time slot or mini-time slot, the number of subcarriers included in the RB, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length and other structures can be changed in various ways.

[0326] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0327] The names used for parameters, etc. in this disclosure are not limiting in any way. Furthermore, the mathematical formulas, etc. using these parameters may also be different from the mathematical formulas explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by all appropriate names, and thus the various names assigned to these various channels and information elements are not limiting in any way.

[0328] Information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, code elements, and chips, etc. mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0329] In addition, information, signals, etc. can be output in at least one direction from a high layer to a low layer, and from a low layer to a high layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0330] The input and output information, signals, etc. may be stored in a specific area (e.g., a memory) or managed using a management table. The input and output information, signals, etc. may also be overwritten, updated, or recorded. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0331] The notification of information is not limited to the method / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information in the present disclosure may be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0332] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC Control Element (CE).

[0333] Furthermore, notification of specific information (for example, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (for example, by not notifying the specific information or by notifying other information).

[0334] The determination may be made by a value represented by one bit (0 or 1), by a true or false value (boolean) represented by true (true) or false (false), or by comparison of numerical values ​​(for example, comparison with a specific value).

[0335] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be construed broadly to mean instructions, instruction sets, codes, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, functions, etc.

[0336] In addition, software, instructions, information, etc. may be sent and received via a transmission medium. For example, when the software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, optical cable, twisted pair, and Digital Subscriber Line (DSL)), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0337] The terms "system" and "network" used in the present disclosure may be used interchangeably. "Network" may also refer to a device included in the network (eg, a base station).

[0338] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL))", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" may also be used interchangeably.

[0339] In the present disclosure, the terms "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier" and the like are used interchangeably. The base station may also be referred to as a macro cell, a small cell, a micro cell, a pico cell and the like.

[0340] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or all of the coverage area of ​​at least one of a base station and a base station subsystem that provide communication services within the coverage area.

[0341] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user equipment (UE)”, and “terminal” may be used interchangeably.

[0342] A mobile station may also be referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handheld device, a user agent, a mobile client, a client, or some other appropriate terminology.

[0343] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may also be a means of transportation (e.g., a car, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0344] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, the user terminal 20 may be configured to have the functions of the above-mentioned base station 10. In addition, words such as "uplink" and "downlink" may also be replaced by words corresponding to communication between terminals (for example, "side". For example, an uplink channel, a downlink channel, etc. may also be replaced by a side channel.

[0345] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0346] In the present disclosure, with respect to operations set to be performed by a base station, sometimes, depending on the circumstances, they are also performed by its upper node. In a network including one or more network nodes having a base station, various operations performed for communication with a terminal can obviously be performed by a base station, one or more network nodes other than the base station (for example, consider a Mobility Management Entity (MME)), a Serving-Gateway (S-GW), etc., but not limited thereto), or a combination thereof.

[0347] Each method / implementation method described in this disclosure may be used alone, in combination, or switched during execution. In addition, the processing procedures, timings, flow charts, etc. of each method / implementation method described in this disclosure may be swapped in order as long as they are not contradictory. For example, with respect to the method described in this disclosure, the elements of various steps are presented in an illustrative order, and are not limited to the specific order presented.

[0348] The various modes and embodiments described in the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (Ultra Mobile Broadband (UMB)), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), and systems using other appropriate wireless communication methods, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0349] The phrase “based on” used in the present disclosure does not mean “based only on” unless explicitly described otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0350] Any reference to an element using the terms "first," "second," etc., used in this disclosure is not intended to be a comprehensive limitation on the number or order of these elements. These terms may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, reference to a first and second element does not mean that only two elements may be used or that the first element must be located before the second element in some form.

[0351] The term "determining" as used in this disclosure sometimes includes a variety of operations. For example, "determining" can be considered to be "judging", calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database or other data structure), ascertaining, etc.

[0352] In addition, "judgment (decision)" can also be regarded as "judgment (decision)" on receiving (e.g., receiving information), transmitting (e.g., sending information), input (input), output (output), accessing (e.g., accessing data in a memory), etc.

[0353] In addition, "judgment (decision)" can also be regarded as "judgment (decision)" on resolving (resolving), selecting (selecting), choosing (choosing), establishing (establishing), comparing (comparing), etc. That is, "judgment (decision)" can be regarded as "judgment (decision)" on certain operations.

[0354] In addition, "judge (decide)" can also be replaced by "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0355] The terms "connected", "coupled", or all their variations used in this disclosure mean all direct or indirect connections or couplings between two or more elements, and can include the situation where there are one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The combination or connection between the elements can be physical, logical, or a combination thereof. For example, "connection" can also be replaced by "access".

[0356] In the present disclosure, when two elements are connected, it can be considered that they are "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-exhaustive examples, they are "connected" or "combined" to each other using electromagnetic energy with a wavelength in the wireless frequency domain, microwave region, light (both visible and invisible light) region, etc.

[0357] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "bound" may also be interpreted in the same way as "different".

[0358] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Further, the term "or" as used in this disclosure does not constitute an exclusive logical or.

[0359] In the present disclosure, when an article is added due to translation, such as a, an, and the in English, the present disclosure may also include a case where the noun connected to the article is in plural form.

[0360] The invention disclosed herein is described in detail above, but it is obvious to those skilled in the art that the invention disclosed herein is not limited to the embodiments described in the disclosure. The invention disclosed herein can be implemented as a modification and alteration without departing from the purpose and scope of the invention determined by the description of the claims. Therefore, the description of the disclosure is for the purpose of illustration and does not bring any restrictive meaning to the invention disclosed herein.

Claims

1. A terminal having: A transmitting unit, transmitting capability information, wherein the capability information indicates support for simultaneous reception of quasi-co-located QCL type signals with respect to different spatial reception parameters; A control unit, controlling reception of a physical downlink control channel PDCCH and a physical downlink shared channel PDSCH; and a receiving unit, receiving at least the PDCCH among the PDCCH and the PDSCH, The control unit controls to prioritize reception of the PDCCH in the following case: the transmitting unit transmits the capability information, the PDCCH and the PDSCH are repeated in at least one symbol, a QCL type of a spatial reception parameter of a demodulation reference signal DMRS for the PDSCH is different from a QCL type of a spatial reception parameter of a DMRS for the PDCCH, and the PDCCH and the PDSCH are associated with a control resource set CORESET pool index of the same value, The control unit controls to receive both the PDCCH and the PDSCH under the following circumstances: the transmitting unit transmits the capability information, the PDCCH and the PDSCH overlap in at least one symbol, and the QCL type of the reception space parameter of the DMRS of the PDSCH is different from the QCL type of the spatial reception parameter of the DMRS of the PDCCH, and the PDCCH is associated with the PDSCH to different values ​​of the CORESET pool index.

2. A wireless communication method, used for a terminal, the wireless communication method comprising: The step of transmitting capability information indicating support for simultaneous reception of quasi-co-located QCL type signals with respect to different spatial reception parameters; The step of controlling the reception of the physical downlink control channel PDCCH and the physical downlink shared channel PDSCH; and receiving at least the PDCCH among the PDCCH and the PDSCH, Reception of the PDCCH is prioritized in the following cases: the capability information is transmitted, the PDCCH and the PDSCH are repeated in at least one symbol, a QCL type of a spatial reception parameter of a demodulation reference signal DMRS for the PDSCH is different from a QCL type of a spatial reception parameter of a DMRS for the PDCCH, and the PDCCH and the PDSCH are associated with a control resource set CORESET pool index of the same value, The PDCCH and the PDSCH are both received in the following case: the capability information is sent, the PDCCH and the PDSCH overlap in at least one codeword, and the QCL type of the reception spatial parameters of the DMRS of the PDSCH is different from the QCL type of the spatial reception parameters of the DMRS of the PDCCH, and the PDCCH is associated with the PDSCH to different values ​​of the CORESET pool index.

3. A base station, comprising: A receiving unit receiving capability information, wherein the capability information indicates support for simultaneous reception of quasi-co-located QCL type signals with respect to different spatial reception parameters; A sending unit, sending a physical downlink control channel PDCCH and a physical downlink shared channel PDSCH; and a control unit, controlling a terminal so that the terminal receives at least the PDCCH among the PDCCH and the PDSCH, The control unit controls the terminal so that the terminal prioritizes reception of the PDCCH in the following case: the receiving unit receives the capability information, the PDCCH and the PDSCH are repeated in at least one symbol, a QCL type of a spatial reception parameter of a demodulation reference signal DMRS for the PDSCH is different from a QCL type of a spatial reception parameter of a DMRS for the PDCCH, and the PDCCH and the PDSCH are associated with a control resource set CORESET pool index of the same value, The control unit controls the terminal to receive both the PDCCH and the PDSCH in the following situation: the receiving unit receives the capability information, the PDCCH and the PDSCH overlap in at least one codeword, and the QCL type of the reception space parameter of the DMRS of the PDSCH is different from the QCL type of the spatial reception parameter of the DMRS of the PDCCH, and the PDCCH is associated with the PDSCH to different values ​​of the CORESET pool index.

4. A system comprising a terminal and a base station, The base station has: a receiving unit receiving capability information, the capability information indicating support for simultaneous reception of quasi-co-located QCL type signals with respect to different spatial reception parameters; and A transmitting unit, transmitting a physical downlink control channel PDCCH and a physical downlink shared channel PDSCH, The terminal comprises: a sending unit, which sends the capability information; A control unit, controlling reception of the PDCCH and the PDSCH; and a receiving unit, receiving at least the PDCCH among the PDCCH and the PDSCH, The control unit of the terminal performs control to prioritize reception of the PDCCH in the following case: the transmitting unit of the terminal transmits the capability information, the PDCCH and the PDSCH are repeated in at least one symbol, a QCL type of a spatial reception parameter of a demodulation reference signal DMRS of the PDSCH is different from a QCL type of a spatial reception parameter of a DMRS of the PDCCH, and the PDCCH and the PDSCH are associated with a control resource set CORESET pool index of the same value, The control unit of the terminal controls to receive both the PDCCH and the PDSCH under the following circumstances: the transmitting unit of the terminal sends the capability information, the PDCCH and the PDSCH overlap in at least one codeword, and the QCL type of the reception space parameter of the DMRS of the PDSCH is different from the QCL type of the spatial reception parameter of the DMRS of the PDCCH, and the PDCCH is associated with the PDSCH to different values ​​of the CORESET pool index.

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